jones



(No Model.)

H. P. JONES. DIAPHRAGM FOR ACOUSTIC IELEPHONES. No. 405,483. I PatentedJune 18, 1889 Fag .1

WIT/V58 UVVE/VTUH. 52 623 BY M.

ATTORNEY UNITED STATES PATENT QrrIcE.

HENRY P. JONES, OF NEW YORK, N. Y.

DlAPl-lRAGM FOR ACOUSTIC TELEPHONES.

SPECIFICATION forming part of Letters Patent NO. 405,483, dated June 18,1889.

Application filed April 4, 1888. Serial No. 269,534, (No model.)

To all whom it may concern.-

Be it known that I, HENRY P. JONES, of

the city, county, and State of New York, have invented a new andImproved Diaphragm for Acoustic Telephones, of which the following is afull, clear, and exact description.

The object of the invention is to provide a new and improved diaphragnrspecially adapted for acoustic telephones and serving to soften andgather the spoken sounds, so as to facilitate a perfect transmission ofthe sounds.

The invention consists of certain parts and details and combinations ofthe same, as will be fully described herein after, and then pointed outin the claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar letters of reference indicatecorresponding parts in both the figures.

Figure 1 is a face view of the improvement, and Fig. 2 is a sectionalplan view of the same on the line 00 a". of Fig. 1.

The improved diaphragm A consists, principally, of the piece of fabricB, preferably made of silk and woolen threads woven with each other bothin the warp and weft. In the fabric B are interwoven the longitudinalrods 0, made of wire, wire cables, or catgut strings, or other suitablematerial, and at right angles to the rods 0 the rods D are interwoven inthe fabric B, which are of similar material and shape to the rods 0. Atthe intersection of the rods 0 and D is placed and secured to the fabricthe button E, connected in the usual manner with the wire F,transmitting the sounds spoken. At two opposite ends of the fabric B areplaced the rods G and G, secured to the fabric by stitching orinterwoven in the same. The rods 0, D, G, and G pass at their endsthrough the apertures H in a rectangular frame H, and the innerprojecting ends are bent over or otherwise secured on the back of theframe H, so as to hold the entire diaphragm to the said rectangularframe H.

The rods 0 and D may be covered by wool or silk threads before beinginterwoven in the fabric B.

Instead of using only two Wires C and D, I may employ any number of suchwires, crossing each other near the middle of the fabric B andinterwoven in the same.

The rods 0 and D serve to strengthen and stiffen the fabric B, and atthe same time serve as transmitters of the sounds to the button E, andthe fabric B, 011 account of being made of wool and silk, softens thesounds spoken on the diaphragm, thereby facilitating a perfecttransmission of the sound to the button E and the wire F.

Having thus fully described my invention, I claim as new and desire tosecure by Letters Patent- 1. As a new article of manufacture, adiaphragm for acoustic telephones, consisting of a piece of fabrichaving strands or cables of greater strength than the ordinary woof andweft threads of the fabric interwoven in it, the said strands or cablesintersecting each other at the center to form a support for the buttonand line-wire, substantially as set forth.

2. As a new article of manufacture a diaphragm for acoustic telephones,consisting of a piece of silk and woolen fabric having strands or cablesof greater strength than the ordinary warp and weft threads of thefabric interwoven in it, the said strands or cables intersecting eachother at the center to form a support for the button and line-wire, asset forth.

3. A piece of fabric woven of silk and woolen threads, and rods orcables crossing each other and interwoven in the said fabric, incombination with a button secured in the middle of the fabric at theintersection of the crossing rods or cables, and a wire extending fromthe said button, substantially as shown and described.

4. The combination, with a rectangular frame, of a piece of fabric wovenof silk and woolen threads, rods or cables crossing each other andinterwoven in the said fabric and also secured to the said rectangularframe, a button secured in the middle of the said fab ric at theintersection of the crossing rods or cables, and a wire extending fromthe said button, substantially as shown and described.

' 5. The combination, with a frame, of a piece of fabric woven of silkand woolen threads, rods or cables crossing each other in the middle ofthe fabric and interwoven in the said from the back of the said button,substanfabric, being also fastened by their ends to tially as shown anddescribed. the said frame, rods secured to the opposite ends of thefabric and fastened to the said HENRY P. JONES. 5 rectangular frame, abutton secured in the Witnesses:

middle of the fabric at the intersection of the GEORGE T. JONES,

crossing rods or cables, and a Wire lea-ding PATRICK J. BYRNE.

